Brocade Communications Systems IPMC5000PEF manual

Displaying the passive interface with other querier present

1/1/16	has	4 groups,
This interface is Querier
default V2
group: 226.6.6.6, life = 240
group: 228.8.8.8, life = 240
group: 230.0.0.0, life = 240
group: 224.4.4.4, life = 240
1/1/24	has	1 groups,
This interface is Querier
default V2
group: 228.8.8.8, life = 240
2/1/16	has	4 groups,
This interface is Querier
default V2
group: 226.6.6.6, life = 240
group: 228.8.8.8, life = 240
group: 230.0.0.0, life = 240
group: 224.4.4.4, life = 240
2/1/24	has	2 groups,

This interface is non-Querier Querier is 10.5.5.5

Age is 0

Max response time is 100 default V2

****Warning! has V3 (age=0) nbrs group: 234.4.4.4, life = 260 group: 226.6.6.6, life = 260

3/1/1	has	4 groups,
This interface is Querier
default V2
group: 238.8.8.8, life = 260
group: 228.8.8.8, life = 260
group: 230.0.0.0, life = 260
group: 224.4.4.4, life = 260
3/1/4	has	1 groups,
This interface is non-Querier
Querier is 10.8.8.8
Age is 0
Max response time is 100
default V2
**** Warning! has V3 (age=0) nbrs
group: 236.6.6.6, life = 260

Displaying the passive interface with other querier present

The following example shows the output in which the VLAN interface is passive and another querier is present with the lowest IP address.

device#show ip multicast vlan 10

Version=2,	Intervals: Query=125, Group Age=260, Max Resp=10, Other Qr=260
VL10: dft V2, vlan cfg passive, 7 grp, 6 (*G) cache, rtr ports,
router	ports: 2/1/24(260) 10.5.5.5, 3/1/4(260) 10.8.8.8,
1/1/16	has	4 groups,
This interface is non-Querier (passive)
default V2
group: 226.6.6.6, life = 260
group: 228.8.8.8, life = 260
group: 230.0.0.0, life = 260
group: 224.4.4.4, life = 260
1/1/24	has	1 groups,
This interface is non-Querier (passive)
default V2
group: 228.8.8.8, life = 260
2/1/16	has	4 groups,
This interface is non-Querier (passive)
default V2
group: 226.6.6.6, life = 260
group: 228.8.8.8, life = 260


group: 230.0.0.0,		life =		260
group: 224.4.4.4,		life	=	260
2/1/24 has	2 groups,

This interface is non-Querier (passive)

Querier is 10.5.5.5

Age is 0

Max response time is 100

FastIron Ethernet Switch IP Multicast Configuration Guide	33
53-1003085-02

Image 35

Brocade Communications Systems IPMC5000PEF manual Displaying the passive interface with other querier present

Contents

FastIron Ethernet Switch IP Multicast Page Contents Vlan Enabling Igmp V3 membership tracking and fast leave for Defining the maximum number of PIM cache entries Configuring Msdp mesh group Configuring Multicast Source Discovery Protocol MsdpConfiguring Msdp Configuring Msdp mesh groups Enabling MLDv2 197 PIM Anycast RP 194 Configuring PIM Anycast RP147 196 209 Clearing IPv6 MLD traffic 206 Text formatting conventions Command syntax conventionsDocument conventions Convention Brocade resources Brocade resourcesGetting technical help Document feedback Document feedback Support is added for static mroute IntroductionWhat’s new in this document Supported hardware How command information is presented in this guide How command information is presented in this guide Igmp snooping overview Supported IPv4 Multicast Traffic Reduction Queriers and non-queriers Queriers and non-queriers Forwarding mechanism in hardware VLAN-specific configurationVLAN-specific configuration Tracking and fast leave Following notes apply to all devices Hardware resources for Igmp and PIM-SM snooping Igmp snooping configuration Igmp snooping configuration Syntax no system-max igmp-snoop-mcache num Igmp snooping mcache entries and group addressesIgmp snooping mcache entries and group addresses Setting the maximum number of Igmp group addresses Setting the maximum number of Igmp group addressesConfiguring the Igmp mode Configuration notes for Layer 3 devices Configuring the global Igmp version Configuring the Igmp versionConfiguring the global Igmp mode Configuring the Igmp mode for a Vlan Information specific to FCX and ICX devices Configuring static groups to specific portsConfiguring the Igmp version for individual ports in a Vlan Configuring the Igmp version for individual ports in a Vlan Modifying the maximum response time Modifying the query interval active Igmp snooping mode onlyDisabling Igmp snooping on a Vlan Modifying the age interval for group membership entries Modifying the multicast cache age time Configuring report controlConfiguring report control Turning off static group proxy Enabling or disabling error and warning messagesConfiguring static router ports Enabling or disabling error and warning messages Syntax no multicast tracking Enabling fast leave for IgmpEnabling fast convergence Enabling fast leave for Igmp Syntax multicast fast-convergence Igmp snooping show commandsDisplaying the Igmp snooping configuration Igmp snooping show commands Displaying Igmp group information Displaying Igmp snooping errorsDisplaying Igmp snooping errors Syntax show ip multicast error Syntax show ip multicast group group-addressdetail tracking Displaying Igmp snooping mcache informationDisplaying Igmp snooping mcache information Syntax show ip multicast resource Displaying software resource usage for VLANsDisplaying software resource usage for VLANs Syntax show ip multicast mcache Syntax show ip multicast traffic Displaying the status of Igmp snooping trafficDisplaying the status of Igmp snooping traffic Displaying querier information Displaying querier information Displaying the active Interface with other querier present Displaying the passive interface with other querier present Displaying the passive interface with other querier present Clearing the mcache on a specific Vlan Clear commands for Igmp snoopingClear commands for Igmp snooping Clearing the Igmp mcache Clearing Igmp counters on VLANs PIM SM traffic snooping overviewClearing Igmp counters on VLANs Application examples of PIM SM traffic snooping IPv4 Multicast Traffic Reduction Configuration notes and limitations for PIM SM snooping Configuration notes and limitations for PIM SM snooping Enabling or disabling PIM SM snooping PIM SM snooping configurationPIM SM snooping configuration Displaying PIM SM snooping information PIM SM snooping show commandsEnabling PIM SM snooping on a Vlan Disabling PIM SM snooping on a Vlan Syntax show ip multicast pimsm-snooping vlan vlan-id Displaying PIM SM snooping information on a Layer 2 switchDisplaying PIM SM snooping information on a Layer 2 switch Syntax show ip multicast pimsm-snooping vlan-id Multicast Group IP address of the multicast group IPv4 Multicast Traffic Reduction MLD snooping overview IPv6 Multicast Traffic Reduction FastIron Ethernet Switch IP Multicast Configuration Guide Forwarding mechanism in hardware Hardware resources for MLD and PIMv6 SM snooping MLD snooping configuration notes and feature limitations MLD snooping configuration notes and feature limitations MLD snooping-enabled queriers and non-queriers MLD snooping-enabled queriers and non-queriers MLDv1 with MLDv2 MLD snooping configurationMLD and Vlan configuration MLD and Vlan configuration Configuring the hardware and software resource limits Configuring the hardware and software resource limitsConfiguring the global MLD mode Modifying the age interval Modifying the query interval active MLD snooping mode onlyConfiguring the global MLD version Modifying the age interval Syntax no ipv6 multicast mcache-age num Modifying the multicast cache aging timeSyntax no ipv6 multicast report-control Syntax no ipv6 multicast leave-wait-time num Disabling error and warning messages Disabling error and warning messagesConfiguring the MLD mode for a Vlan Configuring the MLD version for the Vlan Disabling static group proxy Configuring the MLD version for individual portsConfiguring static groups Configuring the MLD version for individual ports Syntax no multicast6 tracking Configuring fast leave for MLDv1By default, MLD snooping proxy is enabled Syntax no multicast6 proxy-off Enabling fast convergence Displaying MLD snooping error informationSyntax show ipv6 multicast error Displaying MLD snooping information Displaying MLD group information Displaying MLD group information Syntax show ipv6 multicast mcache Displaying MLD snooping mcache informationDisplaying MLD snooping mcache information Syntax show ipv6 multicast resource System-max mld-snoop-mcache commandIPv6 Multicast Traffic Reduction Syntax show ipv6 multicast traffic Displaying status of MLD snooping trafficDisplaying status of MLD snooping traffic Syntax show ipv6 multicast vlan vlan-id Displaying MLD snooping information by VlanDisplaying MLD snooping information by Vlan Clearing traffic counters on a specific Vlan Clearing MLD snooping counters and mcacheClearing MLD counters on all VLANs Clearing the mcache on all VLANs Application examples of PIM6 SM traffic snooping PIM6 SM traffic snooping overview IPv6 Multicast Traffic Reduction Configuration notes and limitations for PIM6 SM snooping Configuration notes and limitations for PIM6 SM snooping Enabling or disabling PIM6 SM snooping PIM6 SM snooping configurationPIM6 SM snooping configuration Displaying PIM6 SM snooping information PIM6 SM snooping show commandsEnabling PIM6 SM snooping on a Vlan Disabling PIM6 SM snooping on a Vlan Syntax show ipv6 multicast pimsm-snooping vlan vlan-id Displaying PIM6 SM snooping for a VlanDisplaying PIM6 SM snooping for a Vlan Displaying PIM6 SM snooping for a Vlan A mixed stack only Supported IPv4 Multicast Protocols features PIM-SSM IPv4 Multicast Protocols Multicast terms System-max command changesOverview of IP multicasting Support for Multicast Multi-VRF Concurrent support for multicast routing and snooping Show and clear command supportShow and clear command support Changing global IP multicast parameters Defining the maximum number of PIM cache entries Defining the maximum number of PIM cache entriesDefining the maximum number of Igmp group addresses Modifying Igmp V1 and V2 maximum response time Changing Igmp V1 and V2 parametersModifying Igmp V1 and V2 query interval period Modifying Igmp V1 and V2 membership time Syntaxno ip igmp max-response-time num Adding an interface to a multicast groupSecurity enhancement for Igmp Security enhancement for Igmp Multicast non-stop routing Configuration considerationsConfiguring multicast non-stop routing Multicast non-stop routing Displaying the multicast NSR status PIM v4 is configuredPIM v6 is configured Displaying the multicast NSR status Passive multicast route insertion Passive multicast route insertion IP multicast boundaries Configuring PmriConfiguring Pmri Syntax no hardware-drop-disable Extended ACL to deny multicast traffic Configuring multicast boundariesDisplaying multicast boundaries Standard ACL to permit multicast traffic PIM Dense PIM Dense Initiating PIM multicasts on a network Initiating PIM multicasts on a networkPruning a multicast tree Pruning leaf nodes from a multicast tree Grafts to a multicast tree Grafts to a multicast tree Globally enabling and disabling PIM Configuring PIM DMPIM DM versions Enabling PIM on the device and an interface Modifying PIM global parameters Modifying neighbor timeoutEnabling a PIM version Modifying PIM global parameters Modifying the prune wait timer Modifying hello timerModifying prune timer Selection of shortest path back to source Modifying graft retransmit timerModifying inactivity timer Failover time in a multi-path topology Syntax no ip pim dr-priority priority-value Configuring a DR priorityDisplaying basic PIM Dense configuration information Configuring a DR priority Syntax show ip pim vrf vrf-name prune Displaying all multicast cache entries in a pruned stateDisplaying all multicast cache entries Displaying all multicast cache entries in a pruned state IPv4 Multicast Protocols Blocked Filter L2 FID Displaying information across VRFs Displaying information across VRFs PIM Sparse PIM SparsePIM Sparse device types RP paths and SPT paths Configuring PIM SparseRP paths and SPT paths Current limitations Configuring global PIM Sparse parametersCurrent limitations Enabling PIM Sparse for a specified VRF Syntax no ip pim-sparse Configuring PIM interface parametersConfiguring BSRs Configuring PIM interface parameters Syntax no rp-candidate add group-addrmask-bits Configuring RPsConfiguring RPs Syntax no rp-address ip-addr Statically specifying the RPSyntax no rp-candidate delete group-addrmask-bits Syntax clear ip pim vrf vrf-name rp-map Displaying the static RP Configuration considerationsConfiguring an ACL based RP assignment ACL based RP assignment Syntax no ip pim passive PIM PassiveMulticast Outgoing Interface OIF list optimization PIM Passive Displaying system values Displaying system valuesDisplaying PIM resources Syntax show ip pim all-vrf vrf vrf-name hw-resource Syntax show ip pim all-vrf vrf vrf-name resource Syntax show ip pim vrf vrf-name sparse Displaying basic PIM Sparse configuration informationOutput from the show ip pim all-vrf hw-resource command This field Displays Global PIM Sparse mode settings Output of the show ip pim sparse command Displaying a list of multicast groups Output of the show ip pim sparse commandDisplaying a list of multicast groups Syntax show ip pim vrf vrf-name group Output from the show ip pim group commandDisplaying BSR information Displaying BSR information Syntax show ip pim vrf vrf-name bsr Output from the show ip pim bsr command This system is not a Candidate-RP Output from the show ip pim bsr commandDisplaying candidate RP information Displaying candidate RP information Syntax show ip pim vrf vrf-name rp-map Output from the show ip pim rp-candidate commandDisplaying RP-to-group mappings Displaying RP-to-group mappings Displaying RP Information for a PIM Sparse group Output of the show ip pim rp-map commandDisplaying RP Information for a PIM Sparse group Displaying the RP set list Syntax show ip pim vrf vrf-name neighbor Displaying multicast neighbor informationDisplaying multicast neighbor information Syntax show ip pim vrf vrf-name rp-set Displaying the PIM multicast cache Displaying the PIM multicast cache IPv4 Multicast Protocols Ingress Vlan Displaying the PIM multicast cache for DIT Displaying the PIM multicast cache for DIT Syntax show ip pim vrf vrf-name mcache dit-idx dit Clearing the PIM forwarding cacheDisplaying PIM traffic statistics Clearing the PIM forwarding cache Syntax show ip pim vrf vrf-name traffic join-prune rx tx Syntax clear ip pim vrf vrf-name traffic Clearing the PIM message countersClearing the PIM message counters Syntax show ip pim vrf vrf-name rpf ip-address Configuring Multicast Source Discovery Protocol MsdpDisplaying PIM RPF Displaying PIM RPF Peer Reverse Path Forwarding RPF flooding Peer Reverse Path Forwarding RPF floodingSource Active caching Enabling Msdp Configuring MsdpConfiguring Msdp peers Configuring Msdp Syntax no msdp-peer ip-addrshutdown Disabling an Msdp peerDesignating the interface IP address as the RP IP address Disabling an Msdp peer Filtering Msdp source-group pairs Filtering Msdp source-group pairsFiltering incoming and outgoing Source-Active messages Example IPv4 Multicast Protocols Filtering advertised Source-Active messages Filtering advertised Source-Active messagesDisplaying Msdp information Displaying summary information Syntax show ip msdp summary Displaying peer information Msdp peer information Syntax show ip msdp vrf vrf-name peer TCP Statistics IPv4 Multicast Protocols Displaying Source Active cache information Syntax show ip msdp vrf vrf-name rpf-peer ip-addr Displaying Msdp RPF-PeerDisplaying Msdp RPF-Peer Clearing peer information Displaying Msdp PeerDisplaying Msdp VRF RPF-Peer Clearing Msdp information Clearing Msdp statistics Configuring Msdp mesh groupsClearing the source active cache Clearing the source active cache for a VRF Configuring Msdp mesh group Configuring Msdp mesh group Syntax no mesh-group group-namepeer-address Configuring Msdp Anycast RPMsdp Anycast RP Msdp Anycast RP Example Example RP 1 configuration PIMR1 configuration RP 2 configuration PIM Anycast RP Configuring PIM Anycast RPPIMR2 configuration PIM Anycast RP Syntax show ip pim vrf vrf-name anycast-rp Displaying information for a PIM Anycast RP interfaceDisplaying information for a PIM Anycast RP interface Static multicast routes Static multicast routes Igmp proxy limitations Igmp proxy configuration notesConfiguring Igmp Proxy Igmp Proxy Filtering groups in proxy report messages Filtering groups in proxy report messagesDisplaying Igmp Proxy information Syntax show ip igmp proxy stats Output of show ip igmp proxyUse the show ip igmp proxy summary Output of show ip igmp proxy summary Igmp Compatibility with Igmp V1 Default Igmp versionDefault Igmp version Syntax no ip igmp version version-number Enabling the Igmp version per interface settingGlobally enabling the Igmp version Globally enabling the Igmp version Syntax no ip igmp tracking Enabling membership tracking and fast leaveEnabling membership tracking and fast leave Creating a static Igmp group Setting the query intervalOr this command Creating a static Igmp group Displaying IGMPv3 information Setting the group membership timeSetting the maximum response time Setting the group membership time Age 253 226.0.0.1 Clearing the Igmp group membership table Clearing the Igmp group membership tableDisplaying static Igmp groups Displaying the Igmp status of an interface IPv4 Multicast Protocols Syntax show ip igmp vrf vrf-name traffic Clearing Igmp traffic statisticsDisplaying Igmp traffic status Clearing Igmp traffic statistics Syntax clear ip igmp vrf vrf-nametraffic Displaying Igmp settingsSyntax show ip igmp vrf vrf-name settings Source-specific multicast Configuring PIM SSM group rangeSource-specific multicast Igmp V3 and source specific multicast protocols Syntax no ssm-enable range acl-idor acl-name Configuring multiple SSM group rangesSyntax no ssm-enable range group-addressaddress-mask Displaying information for PIM SSM range ACL IGMPv2 SSM mappingDisplaying information for PIM SSM range ACL Enabling IGMPv2 SSM mapping Configuring an ACL for IGMPv2 SSM mappingConfiguring the IGMPv2 SSM mapping commands Configuring an ACL for IGMPv2 SSM mapping Syntax show ip igmp vrf vrf-name ssm-map Example configurationDisplaying an Igmp SSM mapping information Displaying an Igmp SSM mapping information A mixed stack only 3rd generation modules only Supported IPv6 Multicast Features IPv6 PIM Sparse IPv6 PIM SparsePIM Sparse router types RP paths and SPT paths Enabling IPv6 PIM-SM for a specified VRF IPv6 PIM-Sparse modeConfiguring IPv6 PIM-SM on a virtual routing interface IPv6 PIM-Sparse mode Syntax no bsr-msg-interval num Configuring BSRsSetting the BSR message interval Configuring BSRs Syntax no rp-candidate delete group-ipv6addressmask-bits Configuring candidate RPConfiguring candidate RP Syntax no rp-candidate add group-ipv6addressmask-bits Syntax clear ipv6 pim vrf vrfname rp-map Embedded Rendezvous PointSyntax no rp-address ipv6-addr Ipv6-addrparameter specifies the IPv6 address of the RP Syntax no rp-embedded Setting the RP advertisement intervalChanging the Shortest Path Tree threshold Changing the Shortest Path Tree threshold Syntax no message-interval seconds Changing the PIM Join and Prune message intervalChanging the PIM Join and Prune message interval Syntax rp-adv-interval seconds Setting the prune wait interval Setting the prune wait intervalSetting the register suppress interval Setting the register probe time Syntax no hello-timer seconds Setting the inactivity timerChanging the hello timer Setting the inactivity timer Enabling Source-specific Multicast Configuring Source-specific MulticastSyntax no ssm-enable range address-range Enabling Source-specific Multicast Displaying hardware-drop Configuring PmriPassive Multicast Route Insertion Displaying system values Displaying basic PIM Sparse configuration information Syntax show ipv6 pim vrf vrf-name sparse IPv6 Multicast Protocols Displaying IPv6 PIM interface information Displaying IPv6 PIM interface information Syntax show ipv6 pim vrf vrf-name group Displaying a list of multicast groups Syntax show ipv6 pim vrf vrf-name bsr Output from the show ipv6 pim group commandDisplaying BSR information Displaying candidate RP information Syntax show ipv6 pim vrf vrf-name rp-candidate Displaying RP-to-group mappings Syntax show ipv6 pim vrf vrf-name rp-map Displaying RP information for an IPv6 PIM Sparse groupDisplaying the RP set list Displaying RP information for an IPv6 PIM Sparse group Syntax show ipv6 pim vrf vrf-name neighbor Displaying multicast neighbor informationSyntax show ipv6 pim vrf vrf-name rp-set Displaying the IPv6 PIM multicast cache Displaying the IPv6 PIM multicast cache For Replication Entry Syntax show ipv6 pim vrf vrf-name rpf ip-address Displaying IPv6 PIM RPFDisplaying IPv6 PIM counters Displaying IPv6 PIM RPF Syntax show ipv6 pim vrf vrf-name counter Displaying the IPv6 PIM resourcesDisplaying the IPv6 PIM resources Syntax show ipv6 pim all-vrf vrf vrf-name resource Syntax show ipv6 pim vrf vrf-name traffic Displaying PIM traffic statisticsDisplaying PIM traffic statistics Syntax show ipv6 pim all-vrf vrf vrf-name hw-resource Syntax clear ipv6 pim vrf vrf-name cache Clearing the IPv6 PIM forwarding cacheClearing the IPv6 PIM message counters Clearing the IPv6 PIM forwarding cache Clearing the IPv6 PIM traffic Clearing the IPv6 PIM trafficDefining the maximum number of IPv6 PIM cache entries Configuring a static multicast route within a VRF Configuring a static multicast route within a VRF Route Precedence Admin-distance Syntax no anycast-rprp-address my-anycast-rp-set-acl Syntax show ipv6 pim vrf vrf-name anycast-rp Displaying information for an IPv6 PIM Anycast RP interfaceDisplaying information for an IPv6 PIM Anycast RP interface Enabling MLDv2 Configuring MLD parameters for default and non-default VRFsSetting the group membership time Enabling MLDv2 Defining the maximum number of MLD group addresses Setting the maximum response timeDefining the maximum number of MLD group addresses Setting the query interval Setting the query intervalSetting the last listener query interval Setting the robustness Specifying a port version Configuring MLD parameters at the interface levelSetting the version Setting the version Enabling MLD tracking on an interface Setting the version on an interfaceDisplaying MLD information Enabling MLD tracking on an interface Syntax show ipv6 mld vrf vrf-name group Displaying MLD group informationDisplaying MLD definitions for an interface Displaying MLD settings Displaying MLD settings Displaying static MLD groups Syntax show ipv6 mld vrf vrf-name settingsFollowing command displays static MLD groups for the cs VRF Displaying static MLD groups Report has a Receive and a Send section Output from the show ipv6 mld vrf cs static commandDisplaying MLD traffic Displaying MLD traffic Clearing IPv6 MLD traffic IPv6 Multicast BoundariesClearing IPv6 MLD traffic Clearing the IPv6 MLD group membership table cache Syntax no ipv6 multicast-boundary acl-spec Configuration considerationsACL to permit multicast traffic ACL to deny multicast traffic Displaying multicast boundaries Removes multicast routes from the mRTM Clear ip mroute Removes IPv6 multicast routes from the mRTM Privileged Exec modeClear ipv6 mroute Clear ipv6 mroute Ip max-mroute num No ip max-mroute Ip max-mrouteIp mroute Ip max-mroute Tunnel num Configures a static multicast route with a next hopIp mroute next hop Ip mroute next hop No ip mroute vrf vrf-name next-hop-enable-default Ip mroute next-hop-enable-defaultIp mroute next-hop-enable-default Ip mroute vrf vrf-name next-hop-enable-default Ip mroute vrf vrf-name next-hop-recursion Ip multicast disable-floodingIp mroute next-hop-recursion Ip mroute next-hop-recursion Ipv6 max-mroute num Ipv6 max-mrouteIpv6 mroute Ipv6 max-mroute Ipv6 mroute next hop Modes VRF configuration modeConfigures a static mroute with a next hop Command Default No next-hop static mroute is configured No ipv6 mroute vrf vrf-name next-hop-enable-default Ipv6 mroute next-hop-enable-defaultIpv6 mroute next-hop-enable-default Ipv6 mroute vrf vrf-name next-hop-enable-default Ipv6 mroute vrf vrf-name next-hop-recursion Ipv6 multicast disable-floodingIpv6 mroute next-hop-recursion Ipv6 mroute next-hop-recursion Route-precedence Route-precedence Show ip mroute Route-precedence admin-distanceRoute-precedence admin-distance This example displays information for IP multicast route IP Multicast CommandsStatic Connected Show ip multicast optimization ipmc Ipmc Displays information for configured multicast routesShow ip multicast optimization Show ip static mroute Summary Show ipv6 mrouteShow ipv6 mroute Connect Syntax show ipv6 multicast optimization l2mc Modes Privileged Exec modeShow ipv6 multicast optimization This example displays information for IPv6 multicast route Show ipv6 static mroute Displays information for configured IPv6 multicast routesShow ipv6 static mroute Show ipv6 static mroute Igmp snooping CommandCommand output Feature support Multicast fast-leave-v2command Show commands show commandShow command Multicast fast-convergencecommand